Automobile jack



March 6, 1928.

C. J. PARR AUTOMOBILE JACK Filed Oct. 8. 1926 2 Sheets-Sheet l VINVENTOR.

ATTORNEYS.

5 and 2 is its rear axle.

iPatented CLARENCE J. PARR, F HANNIIBAL, MISSOURI. I

AUTOMOBILE JACK.

Application filed October 8, 1926. Serial No. 14,266.

This invention relates to automobile jacks. The object of the inventionis the construction of a simple and eflieient jack, which will raise thewheels of a motor vehicle entirely off a floor or a roadway, and therebyremove the weight of the load from off the tires.

Another object of the invention is the construction of a jack apparatus,including a transverse primary driving shaft, two parallellongitudinally extending driving shafts and a single rear driven shaft,the primary driving shaft and the rear driven shaft being connected attheir ends with four vertically moving jacks, whereby the motor vehicleto which my apparatus is attached can be lifted in the appended claims.

In the drawings:

Figure 1 is a top plan view of an apparatus constructed in accordancewith the present inventimi, showing the top section of each gear casingremoved. 7

Figure 2 is a sectional. view taken on line 2-2 Figure 1, and looking inthe direction of the arrows. v

Figure 3 is a sectional View taken on line 3-3, Figure 1, and looking inthe direction of the arrows.

Figure is a sectional view taken on line 44, Figure 1, and looking inthe direction of the arrows.

Figure 5 is a sectional view taken on line 55, Figure 1, and looking inthe direction of the arrows.

Referring to the drawings by numerals, 1 designates the front axle of amotor vehicle, To each of these axles are attached sectional gearcasings 3. Each gear casing 3 is provided with a portion 4, surroundingthe axle, and by means of ordinary bolts 5, the sections of the casingare held together upon the axle. Each casing 3 is provided with a sidehorizontal bearing 6 and and inner-end horizontal bearing 7, in whichbearings are journalled the'shafts, as hereinafter described.

The rimary driving shaft 8 is journalled in bearlngs 7 of the two gearcasings 3 at taehed to front axle 1. On the ends of shaft 8 are bevelledgears 9. These gears 9 mesh with bevelled gears 10. Gears 10 arerotatably mounted on the threaded vertically-movable jacks Hand 11.There are four of these jacks in my apparatus comprising two right handand two left hand threaded jacks, and they travel through the gearcasings 3, sufliciently for the lifting of a motor vehicle off the flooror a roadway, or after it has been lifted, to allow the motor vehicle toagain rest upon the particular floor or roadway over which it may havebeen suspended.

A manually controlled ratchet and lever device 12 (Fig. 1) may beemployed, in conjunction with the toothed wheel 13, to impart rotarymovement to the shaft 8 for raising and lowering the jacks l1 and 11.However, the motor shaft 14 (Fig. 5) may have a sliding gear 15 thereon,which can he made to mesh, in any ordinary way with bevelled gear 16,carried on shaft 17, and this shaft 1.7 is geared up at 18 with the gear19 secured to the driving shaft 8. Therefore, it will be seen that at 12(Fig. 1g 1 have manual means for operating my jac apparatus, while inFigure 5, I have more clearly shown motor actuating means, for operatingthe apparatus.

A pair of parallel, horizontal longitudinally-extending auxiliarydriving shafts 20 are used to equalize the strain on the two rear jacks,and these shafts have their ends journalled in the horizontal sidebearing 6 of the four axle-carried casings 3. The ends of shafts 20extend into caslngs 3, and on the same are secured bevelled gears 21.The gears 21 within the casings 3 supported on front axle 1 mesh withthe double bevelled gears 9, whereby when shaft 8 is rotated, drivingshaft 20 will likewise be rotated, imparting rotary movement also tobevelled gears in the gear casings 3 that are attached to the rear axle2. -A driven shaft 22 is journalled in the end bearings 7 of the rearcasings 3. ()n the ends of shaft 22, within rear casings are doublebevelled gears 23. These gears 23 mesh with gears 21 and also with thehorizontal gears 10 that are rotatably mounted upon the threaded jacks11 and ll. 'llherefore, when shafts 20 are rotated, through the mediumof the shaft 22, perfect rotation of gears 10, and jacks 11, is caused.

It will be understood from the foregoing against the floor or ground orroadway, sufficiently to raise the the entire automobile or motorvehicle off the floor, either for repairing the tires, or more readilyhaving access to the running gear or for removing the weight ofthe loadoff the tires as when the automobile or motor vehicle is in a garage, oris stored away for a definite length of time.

The peculiar arrangement of the four shafts in my jack apparatus,together with the Way they are supported in the horizontal bearings ofthe four axle-carried casings, result in a veryeflicient and durablemechanism, which produces a very satisfactory automobile jack, notheretofore disclosed in the pr1or art. a

'While I have described the preferred embodiment of my invention'andillustrated'the the same'in the accompanying drawings, certain minorchanges or alterations may appear to one skilled in the art to whichthis invention relates during the extensive manufacture of the same, andI, therefore, reserve the right to make such changes or alterations asshall fairly fall within the scope of the present invention.

1 What I claim is:

1. In an apparatus of the class described,

the combination with a front and a rear axle,

a. set of casings on each axle, vertically movaxles, and means withinsaid casings connecting all of said shafts and gears, whereby when saidprimary driven shaft is operated,

said jacks will be operated upon said casings.

2. In an apparatus of the class described, the combination with a frontand a rear axle, of a pair of casings carried by each of said axles, allof said casings provided with outwardly extending side bearings andinwardly extending end bearings, all of said hearings in a horizontalplane, vertically movable jacks supported upon said casings, a primarydrivin shaft journalled upon the end bearings of the set of casingscarried by the front axle, means connecting said driving shaft to thejacks of the set of casings carried by the front axle, whereb when thedriving shaft is operated, said acks will be operated, a driven shaftjournalled upon the end bear ings of the set of casings carried by saidrear axle, means connecting said driven shaft to the jacks of the setofcasin'gs carried by said rear axle, a pair of longitudinally extendinghorizontalauxiliary driving shafts having their front ends rotatablyconnected to said primary driving shaft and their rear ends rotatablyconnected to said driven shaft, and means connected to said drivingshaft whereby power can be imparted thereto for rotating the same andoperating the jacks.

In testimony whereof Ihereunto afiix my signature.

CLARENCE J. PARR.

